Air filter assembly filling plenum interior space

Abstract

An air filter assembly for use with a plenum having an internal passage with a non-linear configuration comprising is provided. The air filter assembly includes a support assembly including a neck portion that is insertable into the internal passage in the plenum and a mounting face. The air filter assembly includes an air filter with a filter frame supporting a filter media. The filter frame has an annular mounting flange extending around a perimeter of an inlet side of the filter which is configured to be releasably connectable to the mounting face of the support assembly. An outlet side of the filter includes a plurality of planar sections that extend at non-90° angles relative to each other and that are configured to be complementary to the internal passage of the plenum.

We claim: 
     
       1. An air filter assembly for use with a plenum having an internal passage with a non-linear configuration, the air filter assembly comprising:
 a support assembly including a neck portion that is insertable into the internal passage in the plenum and a mounting face; and 
 an air filter including a filter frame supporting a filter media, the filter frame having an annular mounting flange extending around a perimeter of an inlet side of the filter, the annular mounting flange being configured to be releasably connectable to the mounting face of the support assembly, an outlet side of the filter including a plurality of planar sections that extend at non-90° angles relative to each other that are configured to be complementary to the internal passage of the plenum. 
 
     
     
       2. The air filter assembly of  claim 1  wherein the plurality of planar sections of the outlet side of the filter media includes a first planar section that extends in perpendicular relation to a plane defined by the inlet side of the filter media, a second section that intersects the first section and extends at a non-90° angle relative to the first section and a third section that intersects the second section and extends at a non-90° angle relative to the second section. 
     
     
       3. The air filter assembly of  claim 2  wherein the third section extends in parallel to the plane defined by the inlet side of the filter media and has a smaller surface area than the inlet side of the filter media. 
     
     
       4. The air filter assembly of  claim 2  wherein a cross-sectional area of the filter media decreases continuously as the second section extends toward the third section. 
     
     
       5. The air filter assembly of  claim 1  wherein the mounting flange of the filter frame includes a plurality of mounting apertures adjacent a first edge of the mounting flange that are releasably engageable with a plurality of resilient spring tabs arranged adjacent a first edge of the mounting face of the support assembly. 
     
     
       6. The air filter assembly of  claim 4  wherein the mounting flange of the filter frame includes a plurality of mounting hooks adjacent a second edge of the mounting flange that opposes the first edge and the mounting hooks being releasably engageable with a plurality of complementary pockets arranged adjacent a second edge of the mounting face of the support assembly that opposes the first edge of the mounting face of the support assembly. 
     
     
       7. The air filter assembly of  claim 1  wherein the filter frame includes side panels that extend over opposing lateral sides of the filter media. 
     
     
       8. The air filter assembly of  claim 1  wherein the filter media is pleated. 
     
     
       9. An air handling system, comprising:
 a plenum having an internal passage with a non-linear configuration; and 
 an air filter assembly connected to an inlet opening of the plenum, the air filter assembly comprising:
 a support assembly including a neck portion that is insertable into the internal passage in the plenum and a mounting face; and 
 an air filter including a filter frame supporting a filter media, the filter frame having an annular mounting flange extending around a perimeter of an inlet side of the filter, the annular mounting flange being configured to be releasably connectable to the mounting face of the support assembly, an outlet side of the filter including a plurality of planar sections that extend at non-90° angles relative to each other that are configured to be complementary to the internal passage of the plenum. 
 
 
     
     
       10. The air handling system of  claim 9  wherein the plurality of planar sections of the outlet side of the filter media includes a first planar section that extends in perpendicular relation to a plane defined by the inlet side of the filter media, a second section that intersects the first section and extends at a non-90° angle relative to the first section and a third section that intersects the second section and extends at a non-90° angle relative to the second section. 
     
     
       11. The air handling system of  claim 10  wherein the third section extends in parallel to the plane defined by the inlet side of the filter media and has a smaller surface area than the inlet side of the filter media. 
     
     
       12. The air handling system of  claim 11  wherein a cross-sectional area of the filter media decreases continuously as the second section extends toward the third section. 
     
     
       13. The air handling system of  claim 9  wherein the mounting flange of the filter frame includes a plurality of mounting apertures adjacent a first edge of the mounting flange that are releasably engageable with a plurality of resilient spring tabs arranged adjacent a first edge of the mounting face of the support assembly. 
     
     
       14. The air handling system of  claim 13  wherein the mounting flange of the filter frame includes a plurality of mounting hooks adjacent a second edge of the mounting flange that opposes the first edge and the mounting hooks being releasably engageable with a plurality of complementary pockets arranged adjacent a second edge of the mounting face of the support assembly that opposes the first edge of the mounting face of the support assembly. 
     
     
       15. The air handling system of  claim 9  wherein the filter frame includes side panels that extend over opposing lateral sides of the filter media. 
     
     
       16. The air handling system of  claim 9  wherein the filter media is pleated. 
     
     
       17. The air handling system of  claim 9  wherein the plenum includes a section that extends at a non-90° angle relative to a plane defined by the inlet opening of the plenum. 
     
     
       18. An air filter comprising:
 a pleated filter media; and 
 a filter frame supporting the filter media, the filter frame having an annular mounting flange extending around a perimeter of an inlet side of the filter media, the mounting flange including a plurality of mounting apertures adjacent a first edge of the mounting flange and a plurality of mounting hooks adjacent a second edge that opposes the first edge; 
 wherein an outlet side of the filter media includes a first planar section that extends in perpendicular relation to a plane defined by the inlet side of the filter media, a second section that intersects the first section and extends at a non-90° angle relative to the first section and a third section that intersects the second section and extends at a non-90° angle relative to the second section, the third section extending in parallel to the plane defined by the inlet side of the filter media and having a smaller surface area than the inlet side of the filter media. 
 
     
     
       19. The air filter of  claim 18  wherein a cross-sectional area of the filter media decreases continuously as the second section extends toward the third section. 
     
     
       20. The air filter of  claim 18  wherein the filter frame includes side panels that extend over opposing lateral sides of the filter media.